Tendon taking device with rectangular opening

Abstract

The utility model discloses a rectangular opening tendon taking device which is used in knee joint cruciate ligament reconstruction operation and used for taking autologous femur quadriceps tendon as a rectangular ligament graft, the rectangular tendon taking device comprises a tendon taking handle, two tendon taking connecting rods, a tendon taking side wing cutter and a tendon taking head, the tendon taking connecting rods are connected with the tendon taking handle, and the tendon taking head is connected with the tendon taking handle. The tendon taking head is arranged on the tendon taking connecting rod, the two tendon taking side wing cutters are symmetrically arranged on the two sides of the tendon taking head, and the device is specially designed for conveniently cutting and cutting rectangular cruciate ligament transplantation plants from autologous quadriceps femoris tendons; according to the rectangular tendon taking device, the side wing cutters on the two sides of the rectangular tendon taking device are used for cutting the width and thickness of a graft on the surface of a tendon, then the arc-shaped cutter head in front of the tendon taking head is used for shoveling and cutting the bottom of the graft to be separated from the tendon, finally, the basically separated graft is cut off and taken down through a scalpel, the whole process is convenient to operate, the structure is simple, and the practicability is high. And accurate cutting can be carried out according to different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a rectangular opening tendon remover. Background Art

[0002] During sports injuries or violent trauma in car accidents, the violent twisting of the knee joint produces huge shear and tension forces, which can lead to single or multiple ligament injuries of the knee joint, such as anterior and posterior cruciate ligament injuries and medial and lateral collateral ligament injuries. Anterior cruciate ligament injuries of the knee are very common. Since the anterior cruciate ligament is an important structure for maintaining the stability and normal activity of the knee joint, and lacks good self-repair ability after injury, if the injury is severe and causes it to lose its biomechanical properties or even completely rupture, surgical treatment is required to restore its continuity and mechanical properties. Using tendons from other parts of the patient's body as grafts to reconstruct the anterior cruciate ligament is currently the most commonly used anterior cruciate ligament reconstruction surgical treatment technique in clinical practice. In the past, autologous hamstring tendons were often selected as ligament grafts for anterior cruciate ligament reconstruction, with good results.

[0003] However, recent studies have found that when the hamstring tendon is used as a graft to reconstruct the anterior cruciate ligament, the stability and ability to resist rotational tension of the knee joint after surgery are significantly lower than when the quadriceps tendon is used as a graft to reconstruct the anterior cruciate ligament. Currently, there are few tendon harvesters for the quadriceps tendon on the market, and the tendon harvesting procedures of existing products are cumbersome and laborious. The edges of the harvested grafts are rough, and the size and dimensions of the grafts cannot be accurately required. These shortcomings will seriously affect the efficacy of anterior cruciate ligament reconstruction surgery. In previous anterior cruciate ligament reconstruction surgeries, cylindrical tendon grafts were mostly used. In order to better restore the original anatomical structure and mechanical properties of the anterior cruciate ligament, grafts with rectangular cross-sections have been gradually promoted and applied, and good results have been achieved. However, there is currently a lack of equipment on the market for cutting rectangular grafts. In order to solve the shortcomings and market gaps of current products, the present device provides a rectangular opening tendon harvester. Utility Model Content

[0004] The purpose of the utility model is to provide a rectangular opening tendon remover to solve the above-mentioned technical problems in view of the shortcomings of the prior art.

[0005] The embodiment of the utility model adopts the following technical scheme: it includes a rectangular tendon harvester used when taking autologous quadriceps tendon as a rectangular ligament graft during knee cruciate ligament reconstruction surgery, the rectangular tendon harvester includes a tendon harvesting handle, a tendon harvesting connecting rod, a tendon harvesting wing tool and a tendon harvesting head, the tendon harvesting connecting rod is connected to the tendon harvesting handle, the tendon harvesting head is arranged on the tendon harvesting connecting rod, there are two tendon harvesting wing tools, the two tendon harvesting wing tools are symmetrically arranged on both sides of the tendon harvesting head, the tendon harvesting connecting rod is provided with a scale value and the scale value range is 0-9cm, the starting point of the scale value on the tendon harvesting connecting rod is the end of the tendon harvesting head, and the head end of the tendon harvesting head is arranged in an arc shape.

[0006] Furthermore, the diameter of the first end of the tendon removal connecting rod is smaller than the width of the tendon removal head.

[0007] Furthermore, the tendon removal handle is provided with anti-slip threads.

[0008] Furthermore, the head end of the tendon removal head is inclined at two degrees, and the width of the tendon removal head is 10 mm.

[0009] Furthermore, the height of the two tendon-removing side wing cutters can be 8 mm, and the length of the two tendon-removing side wing cutters can be 10 mm.

[0010] Furthermore, the head ends of the two tendon-removing side cutters are both sharp.

[0011] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0012] The device is designed to conveniently cut and intercept a rectangular cruciate ligament graft from the autologous quadriceps tendon. During the removal process, the rectangular tendon harvester first uses the side cutters on both sides to cut the width and thickness of the graft on the tendon surface, and then uses the arc-shaped blade in front of the tendon head to shovel the bottom of the graft to separate it from the tendon. Finally, the graft that has been basically separated can be cut and removed with a scalpel. The whole process is easy to operate, simple in structure and low in cost, and can be accurately cut according to different sizes, so it is convenient for wide use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0016] Figure 3 It is a schematic diagram of the structure of the rectangular tendon remover in the utility model in the scraping and cutting state from the inside out;

[0017] Figure 4 It is a schematic diagram of the structure of the rectangular tendon remover in the utility model in the state of shoveling from the outside to the inside;

[0018] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0019] Reference numerals

[0020] A rectangular tendon remover 1, a tendon remover handle 11, an anti-slip thread 111, a tendon remover connecting rod 12, a scale value 121, a tendon remover side wing tool 13, and a tendon remover head 14. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by patients with ordinary skills in the field without making creative work are within the scope of protection of the utility model.

[0022] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides a rectangular opening tendon harvester, including a rectangular tendon harvester 1 used when taking the quadriceps tendon from the body as a rectangular ligament graft in a cruciate ligament reconstruction surgery of the knee joint, the rectangular tendon harvester 1 including a tendon harvesting handle 11, a tendon harvesting connecting rod 12, a tendon harvesting wing tool 13 and a tendon harvesting head 14, the tendon harvesting connecting rod 12 is connected to the tendon harvesting handle 11, the tendon harvesting head 14 is arranged on the tendon harvesting connecting rod, two tendon harvesting wing tools 13 are provided, and the two tendon harvesting wing tools 13 are symmetrically arranged on both sides of the tendon harvesting head 14, the tendon harvesting connecting rod 12 is provided with a scale value 121 and the scale value range is 0-9cm, the starting point of the scale value on the tendon harvesting connecting rod 12 is the end of the tendon harvesting head 14, and the head end of the tendon harvesting head 14 is arranged in an arc shape;

[0024] This device is specially designed for conveniently cutting and harvesting rectangular cruciate ligament grafts from autologous quadriceps tendons. The rectangular tendon harvester first uses the side cutters on both sides to cut the width and thickness of the graft on the tendon surface, and then uses the arc-shaped cutter head in front of the tendon head to shovel the bottom of the graft to separate it from the tendon. Finally, the graft that has been basically separated can be cut and removed with a scalpel. The whole process is easy to operate, simple in structure and low in cost, and can be accurately cut according to different sizes, so it is convenient for wide use.

[0025] The utility model is mainly used for taking part of the tendon from the quadriceps femoris tendon of the human body as a graft for reconstruction after the anterior cruciate ligament of the patient is injured. The graft taken out by the utility model is rectangular.

[0026] Specific steps:

[0027] First, the rectangular tendon harvester uses the side cutters on both sides to cut the standard width and thickness of the graft on the tendon surface. This step starts from the quadriceps tendon insertion point on the upper edge of the patella and cuts toward the head end (proximal end) of the human body. The cutting length is determined by the scale on the tendon harvesting rod, and the cutting stops when the required length is reached;

[0028] Second, use a scalpel to cut off the part where the tendon is connected to the upper edge of the patella, free one end of the tendon, and weave the tendon at this end with sutures. The sutures are used to pull and fix the tendon.

[0029] Third, pull the suture to give a certain tension to the free end of the tendon, and then use the curved blade in front of the tendon head to cut the bottom of the tendon to separate it from the main body of the tendon. When cutting, the flank cutters on both sides are exactly in the gap just cut, which ensures the width of the tendon. When cutting, pay attention to the angle of the tendon head and keep it as horizontal as possible to ensure the thickness of the tendon is consistent. The cutting length is re-determined by the scale on the tendon connecting rod, and the cutting is stopped when the required length is reached;

[0030] Fourth, finally use a scalpel to cut off the part where the end of the tendon is connected to the main body of the tendon.

[0031] Reference Figure 2 and Figure 3 As shown, when the required rectangular graft is cut and removed, the medical staff holds the rectangular tendon remover 1 and can determine the length of the cut graft by the scale value 121 provided on the tendon removal connecting rod 12. The two tendon removal wing cutters 13 cut on the graft. After the cutting is completed, the graft cutting height is exactly consistent with the height of the tendon removal wing cutters 13. The medical staff scrapes and cuts the tendon surface with the two tendon removal wing cutters 13. After the scraping and cutting is completed, the cutting of the upper part of the graft is completed.

[0032] Reference Figure 4 As shown, after the medical staff has completed cutting the upper part of the graft, the medical staff holds the rectangular tendon remover 1 and presses the tendon remover head 14 against the head end of the graft according to the required height, and then pushes the required graft from the outside to the inside to complete the shoveling. At this time, the left and right sides and the bottom of the graft are cut and separated. Finally, the medical staff can use a scalpel to cut and break the end of the graft and take it out, thereby realizing the convenient removal of the rectangular tendon graft.

[0033] In a further preferred embodiment of the present invention, the diameter of the head end of the tendon removal connecting rod 12 is smaller than the width of the tendon removal head 14;

[0034] When the required tendon graft is removed, the diameter of the front end of the tendon removal rod 12 is smaller than the width of the tendon removal head 14. Therefore, during the scraping or shoveling process of the graft, the probability of the tendon removal rod 12 touching the graft is reduced, thereby facilitating the removal of the tendon graft by medical staff. At the same time, the rectangular tendon remover 1 is kept in a lighter state, which is convenient for the removal operation and saves the labor of medical staff.

[0035] In a further preferred embodiment of the utility model, the tendon removal handle 11 is provided with an anti-slip thread 111;

[0036] During the operation, medical staff wear gloves for treatment, and the surface of gloves is relatively smooth. In order to prevent medical staff from slipping when taking the device during operation, an anti-slip thread 111 is provided on the tendon removal handle 11 to prevent medical staff from slipping during operation.

[0037] In a further preferred embodiment of the present invention, the head end of the tendon removal head 14 is inclined at two degrees, and the width of the tendon removal head 14 is 10 mm;

[0038] Reference Figure 4 and Figure 5 As shown, when the rectangular tendon retriever 1 is used to scrape the required graft from the outside to the inside, because the rectangular tendon retriever 1 is moved by pushing it during the scraping process, and the pushing is done with force downward, therefore, the head end of the tendon retriever 14 is set to be inclined at two degrees, and the rectangular tendon retriever 1 will not be offset downward during the scraping process of the required graft from the outside to the inside, thereby avoiding a large deviation from the thickness of the required graft cut by itself and ensuring the cutting quality.

[0039] In a further preferred embodiment of the present invention, the height of the two tendon-removing side wing cutters 13 is 8 mm, and the length of the two tendon-removing side wing cutters 13 is 10 mm.

[0040] In a further preferred embodiment of the utility model, the head ends of the two tendon-removing wing cutters 13 are both sharp;

[0041] Since the tendon has a certain toughness, the head ends of the two tendon-removing side cutters 13 are both sharp, so that the required graft can be cut and peeled off conveniently.

[0042] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A rectangular opening tendon remover, characterized in that: include; A rectangular tendon harvester (1) for use in cruciate ligament reconstruction surgery of the knee joint when an autologous quadriceps tendon is used as a rectangular graft; The rectangular tendon removal device (1) comprises a tendon removal handle (11), a tendon removal connecting rod (12), a tendon removal side wing cutter (13) and a tendon removal head (14); The tendon removal connecting rod (12) is connected to the tendon removal handle (11), the tendon removal head (14) is arranged on the tendon removal connecting rod, and two tendon removal side wing cutters (13) are provided, and the two tendon removal side wing cutters (13) are symmetrically arranged on both sides of the tendon removal head (14). The tendon removal connecting rod (12) is provided with a scale value (121) and the scale value range is 0-9cm. The starting point of the scale value on the tendon removal connecting rod (12) is the end of the tendon removal head (14), and the head end of the tendon removal head (14) is arranged in an arc shape.

2. A rectangular opening tendon remover as claimed in claim 1, characterized in that: The diameter of the head end of the tendon removal connecting rod (12) is smaller than the width of the tendon removal head (14).

3. A rectangular opening tendon remover as claimed in claim 2, characterized in that: The tendon removal handle (11) is provided with an anti-slip thread (111).

4. A rectangular opening tendon remover as claimed in claim 1, characterized in that: The head end of the tendon removal head (14) is inclined at two degrees, and the width of the tendon removal head (14) is 10 mm.

5. A rectangular opening tendon remover as claimed in claim 1, characterized in that: The height of the two tendon-removing side wing cutters (13) is 8 mm, and the length of the two tendon-removing side wing cutters (13) is 10 mm.

6. A rectangular opening tendon remover as claimed in claim 1, characterized in that: The head ends of the two tendon-removing side cutters (13) are both sharp.

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